/*
* reserved comment block
* DO NOT REMOVE OR ALTER!
*/
/*
* The Apache Software License, Version 1.1
*
*
* Copyright (c) 1999-2002 The Apache Software Foundation.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution,
* if any, must include the following acknowledgment:
* "This product includes software developed by the
* Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowledgment may appear in the software itself,
* if and wherever such third-party acknowledgments normally appear.
*
* 4. The names "Xerces" and "Apache Software Foundation" must
* not be used to endorse or promote products derived from this
* software without prior written permission. For written
* permission, please contact apache@apache.org.
*
* 5. Products derived from this software may not be called "Apache",
* nor may "Apache" appear in their name, without prior written
* permission of the Apache Software Foundation.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation and was
* originally based on software copyright (c) 1999, International
* Business Machines, Inc., http://www.apache.org. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*/
package com.sun.org.apache.xerces.internal.impl.dtd;
import com.sun.org.apache.xerces.internal.impl.XMLErrorReporter;
import com.sun.org.apache.xerces.internal.impl.msg.XMLMessageFormatter;
import com.sun.org.apache.xerces.internal.util.XMLSymbols;
import com.sun.org.apache.xerces.internal.xni.Augmentations;
import com.sun.org.apache.xerces.internal.xni.NamespaceContext;
import com.sun.org.apache.xerces.internal.xni.QName;
import com.sun.org.apache.xerces.internal.xni.XMLAttributes;
import com.sun.org.apache.xerces.internal.xni.XNIException;
/**
* The DTD validator. The validator implements a document
* filter: receiving document events from the scanner; validating
* the content and structure; augmenting the InfoSet, if applicable;
* and notifying the parser of the information resulting from the
* validation process.
* <p> Formerly, this component also handled DTD events and grammar construction.
* To facilitate the development of a meaningful DTD grammar caching/preparsing
* framework, this functionality has been moved into the XMLDTDLoader
* class. Therefore, this class no longer implements the DTDFilter
* or DTDContentModelFilter interfaces.
* <p>
* This component requires the following features and properties from the
* component manager that uses it:
* <ul>
* <li>http://xml.org/sax/features/namespaces</li>
* <li>http://xml.org/sax/features/validation</li>
* <li>http://apache.org/xml/features/validation/dynamic</li>
* <li>http://apache.org/xml/properties/internal/symbol-table</li>
* <li>http://apache.org/xml/properties/internal/error-reporter</li>
* <li>http://apache.org/xml/properties/internal/grammar-pool</li>
* <li>http://apache.org/xml/properties/internal/datatype-validator-factory</li>
* </ul>
*
* @xerces.internal
*
* @author Elena Litani, IBM
*
*/
public class XMLNSDTDValidator
extends XMLDTDValidator{
/** Attribute QName. */
private QName fAttributeQName = new QName();
/** Bind namespaces */
protected final void startNamespaceScope (QName element, XMLAttributes attributes,
Augmentations augs) throws XNIException {
// add new namespace context
fNamespaceContext.pushContext();
if (element.prefix == XMLSymbols.PREFIX_XMLNS) {
fErrorReporter.reportError(XMLMessageFormatter.XMLNS_DOMAIN,
"ElementXMLNSPrefix",
new Object[]{element.rawname},
XMLErrorReporter.SEVERITY_FATAL_ERROR);
}
// search for new namespace bindings
int length = attributes.getLength();
for (int i = 0; i < length; i++) {
String localpart = attributes.getLocalName(i);
String prefix = attributes.getPrefix(i);
// when it's of form xmlns="..." or xmlns:prefix="...",
// it's a namespace declaration. but prefix:xmlns="..." isn't.
if (prefix == XMLSymbols.PREFIX_XMLNS ||
prefix == XMLSymbols.EMPTY_STRING && localpart == XMLSymbols.PREFIX_XMLNS) {
// get the internalized value of this attribute
String uri = fSymbolTable.addSymbol(attributes.getValue(i));
// 1. "xmlns" can't be bound to any namespace
if (prefix == XMLSymbols.PREFIX_XMLNS && localpart == XMLSymbols.PREFIX_XMLNS) {
fErrorReporter.reportError(XMLMessageFormatter.XMLNS_DOMAIN,
"CantBindXMLNS",
new Object[]{attributes.getQName(i)},
XMLErrorReporter.SEVERITY_FATAL_ERROR);
}
// 2. the namespace for "xmlns" can't be bound to any prefix
if (uri == NamespaceContext.XMLNS_URI) {
fErrorReporter.reportError(XMLMessageFormatter.XMLNS_DOMAIN,
"CantBindXMLNS",
new Object[]{attributes.getQName(i)},
XMLErrorReporter.SEVERITY_FATAL_ERROR);
}
// 3. "xml" can't be bound to any other namespace than it's own
if (localpart == XMLSymbols.PREFIX_XML) {
if (uri != NamespaceContext.XML_URI) {
fErrorReporter.reportError(XMLMessageFormatter.XMLNS_DOMAIN,
"CantBindXML",
new Object[]{attributes.getQName(i)},
XMLErrorReporter.SEVERITY_FATAL_ERROR);
}
}
// 4. the namespace for "xml" can't be bound to any other prefix
else {
if (uri ==NamespaceContext.XML_URI) {
fErrorReporter.reportError(XMLMessageFormatter.XMLNS_DOMAIN,
"CantBindXML",
new Object[]{attributes.getQName(i)},
XMLErrorReporter.SEVERITY_FATAL_ERROR);
}
}
prefix = localpart != XMLSymbols.PREFIX_XMLNS ? localpart : XMLSymbols.EMPTY_STRING;
// http://www.w3.org/TR/1999/REC-xml-names-19990114/#dt-prefix
// We should only report an error if there is a prefix,
// that is, the local part is not "xmlns". -SG
if (uri == XMLSymbols.EMPTY_STRING && localpart != XMLSymbols.PREFIX_XMLNS) {
fErrorReporter.reportError(XMLMessageFormatter.XMLNS_DOMAIN,
"EmptyPrefixedAttName",
new Object[]{attributes.getQName(i)},
XMLErrorReporter.SEVERITY_FATAL_ERROR);
continue;
}
// declare prefix in context
fNamespaceContext.declarePrefix(prefix, uri.length() != 0 ? uri : null);
}
}
// bind the element
String prefix = element.prefix != null
? element.prefix : XMLSymbols.EMPTY_STRING;
element.uri = fNamespaceContext.getURI(prefix);
if (element.prefix == null && element.uri != null) {
element.prefix = XMLSymbols.EMPTY_STRING;
}
if (element.prefix != null && element.uri == null) {
fErrorReporter.reportError(XMLMessageFormatter.XMLNS_DOMAIN,
"ElementPrefixUnbound",
new Object[]{element.prefix, element.rawname},
XMLErrorReporter.SEVERITY_FATAL_ERROR);
}
// bind the attributes
for (int i = 0; i < length; i++) {
attributes.getName(i, fAttributeQName);
String aprefix = fAttributeQName.prefix != null
? fAttributeQName.prefix : XMLSymbols.EMPTY_STRING;
String arawname = fAttributeQName.rawname;
if (arawname == XMLSymbols.PREFIX_XMLNS) {
fAttributeQName.uri = fNamespaceContext.getURI(XMLSymbols.PREFIX_XMLNS);
attributes.setName(i, fAttributeQName);
}
else if (aprefix != XMLSymbols.EMPTY_STRING) {
fAttributeQName.uri = fNamespaceContext.getURI(aprefix);
if (fAttributeQName.uri == null) {
fErrorReporter.reportError(XMLMessageFormatter.XMLNS_DOMAIN,
"AttributePrefixUnbound",
new Object[]{element.rawname,arawname,aprefix},
XMLErrorReporter.SEVERITY_FATAL_ERROR);
}
attributes.setName(i, fAttributeQName);
}
}
// verify that duplicate attributes don't exist
// Example: <foo xmlns:a='NS' xmlns:b='NS' a:attr='v1' b:attr='v2'/>
int attrCount = attributes.getLength();
for (int i = 0; i < attrCount - 1; i++) {
String auri = attributes.getURI(i);
if (auri == null || auri == NamespaceContext.XMLNS_URI) {
continue;
}
String alocalpart = attributes.getLocalName(i);
for (int j = i + 1; j < attrCount; j++) {
String blocalpart = attributes.getLocalName(j);
String buri = attributes.getURI(j);
if (alocalpart == blocalpart && auri == buri) {
fErrorReporter.reportError(XMLMessageFormatter.XMLNS_DOMAIN,
"AttributeNSNotUnique",
new Object[]{element.rawname,alocalpart, auri},
XMLErrorReporter.SEVERITY_FATAL_ERROR);
}
}
}
} // startNamespaceScope(QName,XMLAttributes)
/** Handles end element. */
protected void endNamespaceScope(QName element, Augmentations augs, boolean isEmpty)
throws XNIException {
// bind element
String eprefix = element.prefix != null ? element.prefix : XMLSymbols.EMPTY_STRING;
element.uri = fNamespaceContext.getURI(eprefix);
if (element.uri != null) {
element.prefix = eprefix;
}
// call handlers
if (fDocumentHandler != null) {
if (!isEmpty) {
fDocumentHandler.endElement(element, augs);
}
}
// pop context
fNamespaceContext.popContext();
} // endNamespaceScope(QName,boolean)
}